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前言:本研究是以松香酸钠取代混合砂浆中的石膏,通过对比其沉入度、分层度和强度,从而验证其优良性能。 一、松香酸钠引气剂的制作 将松香研细,溶入沸腾的Na_2CO_3溶液中,得到红棕色液体,再熬制浓缩而成。
Foreword: This study replaced the gypsum in the mixed mortar with sodium rosin, and compared its submergence, delamination and strength to verify its excellent performance. First, the production of sodium aeronate air-entraining agent Finely ground rosin, dissolved in the boiling Na2CO3 solution to obtain a reddish-brown liquid, then tanning made.